<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
            margin: 0px;
        }

        table {
            width: 100%;
            height: 250px;
            text-decoration: none;
        }

        td {
            border: 1px solid;
            color: black;
            text-align: center;
        }
    </style>
</head>

<body>
    <table>
        <!-- tbody区块 -->
        <thead>
            <!-- 表头 -->
            <tr>
                <th>列标题</th>
                <th>列标题</th> 
                <th>列标题</th>
            </tr>
        </thead>
        <tbody>
            <!-- 表体 -->
            <tr>
                <!-- tr是行，td是列,但这里的tdate指的是一行内
                的单元格，而非列 -->
                <td>数据</td>
                <td>数据</td>
                <td>数据</td>
            </tr>
            <!-- 列宽自动分配  -->
            <tr>
                <!-- tr是行，td是列 -->
                <td rowspan="2">数据</td>
                <td>数据</td>
                <td>数据</td>
            </tr>
            <tr>
                <!-- tr是行，td是列 -->
                <td>数据</td>
                <td>数据</td>
            </tr>
            <tr>
                <!-- tr是行，td是列 -->
                <td colspan="3">数据</td>
             
            </tr>
        </tbody>

    </table>
</body>

</html>